"Today Senator Clinton told us that there is a choice in this race, and I couldn't agree with her more, but contrary to what she's been saying, its not a choice between speeches and solutions, it's a choice between a politics that offers more of the same divisions and distractions that didn't work in South Carolina, and didn't work in Wisconsin, and will not work in Texas," Obama said.

On a conference call with reporters, campaign manager David Plouffe said he was anticipating negative advertisements by the Clinton campaign in both Texas and Ohio.

"If her speech last night and this morning is any indication, they will run a negative campaign," Plouffe said.

"There were even reports this morning that there could be a 527 kicking up to the tune of $10 million dollars to run against Obama in Ohio and Texas."

In fact, a group called the American Leadership Project is beginning to run TV ads there, which begin with an announcer saying, "If speeches could create jobs, we wouldn't be facing a recession."

Obama also defended himself against John McCain's claims that he doesn't have the experience needed to be president.

"His policies are not the policies of change and that's the choice in this election. It's time to move beyond the politics of yesterday because we are the party of tomorrow. we are going forward. That's the change I intend to bring as president. Change that matters in the lives of ordinary people"

Obama campaign foreign policy adviser Susan Rice refuted McCain's claims that Obama doesn't have experience to be president. She argued that Obama has judgment and claimed that he actually has more experience than most former presidents.

"In this period, he has already acquired more so called traditional foreign policy experience than most of our last presidents including Jimmy Carter, Ronald Reagan, Bill Clinton and George W. Bush."